Zhuanzhai python, time, date, timestamp conversion

1 Introduction

When writing code, often involving conversion time, date, timestamp.

2. Example

# Introduction module
import time, datetime

2.1 str type date to a timestamp

 1 # character type of time
 2 tss1 = '2013-10-10 11:40:00 p.m.'
 # 3 into an array of time
 4 timeArray = time.strptime(tss1, "%Y-%m-%d %H:%M:%S")
 5 print timeArray     
 6 # timeArray can call tm_year etc.
 7 print timeArray.tm_year   # 2013
 # 8 into a timestamp
 9 timeStamp = int(time.mktime(timeArray))
10 print timeStamp  # 1381419600
11 
12 
# 13 the following results
14 time.struct_time(tm_year=2013, tm_mon=10, tm_mday=10, tm_hour=23, tm_min=40, tm_sec=0, tm_wday=3, tm_yday=283, tm_isdst=-1)
15 2013
16 1381419600

2.2 Changing the type of date display format str

 1 tss2 = "2013-10-10 23:40:00"
 # 2 into an array
 3 timeArray = time.strptime(tss2, "%Y-%m-%d %H:%M:%S")
 # 4 into other display formats
 5 otherStyleTime = time.strftime("%Y/%m/%d %H:%M:%S", timeArray)
 6 print otherStyleTime  # 2013/10/10 23:40:00
 7 
 8 tss3 = "2013/10/10 23:40:00"
 9 timeArray = time.strptime(tss3, "%Y/%m/%d %H:%M:%S")
10 otherStyleTime = time.strftime("%Y-%m-%d %H:%M:%S", timeArray)
11 print otherStyleTime  # 2013-10-10 23:40:00

2.3 timestamp format is converted to the specified date

 # 1 use time
 2 timeStamp = 1381419600
 3 timeArray = time.localtime(timeStamp)
 4 otherStyleTime = time.strftime("%Y--%m--%d %H:%M:%S", timeArray)
 5 print(otherStyleTime)   # 2013--10--10 23:40:00
 # 6 Use datetime
 7 timeStamp = 1381419600
 8 dateArray = datetime.datetime.fromtimestamp(timeStamp)
 9 otherStyleTime = dateArray.strftime("%Y--%m--%d %H:%M:%S")
10 print(otherStyleTime)   # 2013--10--10 23:40:00
# 11 using datetime, utc specified time, a difference of 8 hours
12 timeStamp = 1381419600
13 dateArray = datetime.datetime.utcfromtimestamp(timeStamp)
14 otherStyleTime = dateArray.strftime("%Y--%m--%d %H:%M:%S")
15 print(otherStyleTime)   # 2013--10--10 15:40:00

2.4 obtain the current time and the designated display format

 1 # time to get the current timestamp
 2 now = int(time.time())     # 1533952277
 3 timeArray = time.localtime(now)
 4 print timeArray
 5 otherStyleTime = time.strftime("%Y--%m--%d %H:%M:%S", timeArray)
 6 print otherStyleTime    
 7 
 # 8 the following results
 9 time.struct_time(tm_year=2018, tm_mon=8, tm_mday=11, tm_hour=9, tm_min=51, tm_sec=17, tm_wday=5, tm_yday=223, tm_isdst=0)
10 2018--08--11 09:51:17
11 
12 
13 # datetime get the current time, the array format
14 now = datetime.datetime.now()
15 print now
16 otherStyleTime = now.strftime("%Y--%m--%d %H:%M:%S")
17 print otherStyleTime  
18 
# 19 was as follows:
20 2018-08-11 09:51:17.362986
21 2018--08--11 09:51:17